Category: Southwark

Weighted Mean Direction Surfaces in Python

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I work a lot with flows and spatial interactions, one thing that I’ve wanted to do for a while is compute a mean flow direction surface. Unfortunately, arithmetic means don’t work for angular data, this is because it cannot account for the circular nature of the distribution of angular measurements. For instance the angles 5 […]

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Brunsdon, Charlton, circular statistics, GIS, mean direction, Modeling, python, Representation, Southwark, weighting

A Spatial Approach to Location Quotients

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The intent of this post is not simply to uncover where the highest density of people belonging to a particular ethnic group are, but rather to use the ‘location quotient’ (LQ) technique to compare the ethnic density in any one area to the overall ethnic density in Southwark, thus providing a relative insight into where […]

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data, density, Geography, GIS, KDE, Location Quotient, Representation, Southwark

Mapping Spatial Entropy in Southwark

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I’ve been doing a bit of work recently on segregation with Pablo Mateos, and having gone through the motions with aspatial indices of segregation (the classics): dissimilarity, exposure and so on, I decided to investigate the more explicitly spatial ones. Taking a lead from Reardon and O’Sullivan’s (2004) paper “Measures of Spatial Segregation” in sociological methodology, I […]

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ethnicity, GIS, mapping, Modeling, rasters, segreagtion, Southwark, spatially weighted entropy